Question

The resistivity of material is 10 ohm m at 30° C. When the temperature drops to 28°C then resistivity drops by 2 ohm m . The temperature coefficient of resistivity material is
a. 10 K^-1
b. 2 K^-1
c. 0.1 K^-1
d. 1.0 K^-1​

Answer 1

Answer:

I think that the answer will be b)